and so that is why you see the obama campaign pushing this so hard, because the wind energy industry has about 7,000 or 8,000 workers in iowa. >> reporter: then there is the fight in plain sight-- the >> romney would jeopardize thousands of jobs and knock the wind out of iowa's economy. >> a prairie fire of debt is sweeping across the nation. >> reporter: the negative ads are on >> reporter: the negative ads on almost every channel, every night. >> i mean, it's almost-- the ads border on being vulgar. >> reporter: steve bump has run a fireplace business in the des moines suburbs for 38 years, he knows fall is when people think about snuggling up to a warm fire, and more important for him, when they make buying decisions. >> if i'm selling romance and entertainment with my product, and i am, i don't want that customer to have all these negative thoughts in their mind about this ad that preceded me. >> reporter: bump says superpac- funded political ads are clogging up the airwaves. those campaign ads push his commercials off primetime and all his ads now cost 25% more. >> i'm probably